与星系群其它星系之间相互作用的引力潮可能导致了NGC 3190的旋臂不对称地环绕中心，而星系盘也出现了扭曲。

Gravitational tidal interactions with other members of its group have likely caused the spiral arms of NGC 3190 to appear asymmetric around the center, while the galactic disk also appears warped.

youdao

如此说来，青少年是睡眠质量最糟糕的一群人，婴儿潮的人群能得到最好的睡眠质量。

And it's the teenagers who are the sleepiest of all, with baby boomers getting the most sleep.

youdao

我还记得随着最后一次放学铃声的响起，一群激动无比的孩子一下子潮拥出了校门。

I can't recall a more anxious group of children as that final bell rang and they scattered out of the door.

youdao